package d05_baozhuangClass;

import d01_internalClass.Outer;

public class Test01 {
    public static void main(String[] args) {
        //1、把基本数据类型包装成对象
        int a=12;
        Integer it1=Integer.valueOf(a);
        Integer it2=a;
        int it3=it2;
        int a1=23;
        String res=Integer.toString(a1);
        System.out.println(res+1);//231
        String res1=a1+""; //这样更简单
        //把字符串转换成对应的数字
        String ages="25";
        String dou="123.99";
        int age=Integer.parseInt(ages);
        double dous=Double.valueOf(dou);
    }
}
